Classifying Triangles
Next, using the DESMOS program create 3 triangles using the following criteria:
 All 3 sides are the same length.
 2 of the sides are the same length.
 All 3 sides are different lengths.
What are the names of these three types of triangles?
How are the sides and types of angles related in each triangle?
What can you say about the angles in a triangle in relation to the side opposite each angle? Take a moment to explore your results using GeoGebra.
Summarize how to classify triangles by side length and angle measure by creating a triangle for each box in the chart below. Make sure to indicate angle measures and side lengths.
Scalene 
Isosceles 
Equilateral 

Acute 

Right  
Obtuse 